Control method for engine variable valve timing of hybrid electric vehicle

A method for controlling an engine variable valve timing of a hybrid electric vehicle, the method comprising:

• providing a cam position setting table of a fuel efficiency prioritized intake/exhaust cam control mode to improve fuel efficiency, and a cam position setting table of a normal intake/exhaust cam control mode for enhancing engine negative pressure performance, the cam position setting table of the fuel efficiency prioritized intake/exhaust cam control mode being different from the cam position setting table of the normal intake/exhaust cam control mode;
• selecting one of the fuel efficiency prioritized intake/exhaust cam control mode and the normal intake/exhaust cam control mode according to an amount of a fuel vapor trapped in a canister into which the fuel vapor is collected and whether On-board diagnostics (OBD) diagnosis of an intake cam and OBD diagnosis of an exhaust cam are completed;
• and
• determining position control value of the intake cam and position control value of the exhaust cam by use of the cam position setting table of the selected one of the fuel efficiency prioritized intake/exhaust cam control mode and the normal intake/exhaust cam control mode and then controlling positions of the intake cam and the exhaust cam according to the determined position control values of the intake cam and the exhaust cam.